package com.tools.constants;

/**
 * SignType
 *
 * @author < a href=" ">ZhangYang</ a>
 * @version v1.0.01
 * @date 2018-08-08 13:11
 */
public interface SignType {
  String PLS="+";
  String SUB="-";
  String MUL="×";
  String DIV="÷";
  String EQUAL="=";
}
